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Author Topic: bandpass filters for contest  (Read 1239 times)
F5IJT
Member

Posts: 5




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« on: March 06, 2002, 07:40:23 AM »


I'm looking somes plans of bandpass filters for 160m to 10m. I only find some plans for reception. Can anyone tell me where i can find them on the web for 100W on the output of transceiver.

Thanks.
Sam. F5IJT
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WB2WIK
Member

Posts: 20540




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« Reply #1 on: March 06, 2002, 11:49:42 AM »

Yep, they do exist and I use them all the time, for contesting.

http://www.qth.com/dunestar/

Great "transmitting" (and also receiving) bandswitched, bandpass filters.

73 de Steve, WB2WIK/6
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WA5EE
Member

Posts: 79




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« Reply #2 on: May 20, 2002, 02:59:19 AM »

There were articles in the May and June 1998 QST about building TX/RX bandpass filters ,by Edward Wetherhold ,W3NQN . ARRL members can get them in the "Members-only" area online ,as an Acrobat file .Also , K1TTT has some fine information on stubs and other filters . I haven't used any of these yet,but intend to try some stubs on Field Day. Check the Tech Notes on his page      
http://www.k1ttt.net/k1ttt.html
I hope this helps . E-mail me (  wa5ee@arrl.net )if you need help with the articles.

                   73,
                        Russ , WA5EE
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OE5OHO
Member

Posts: 3




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« Reply #3 on: May 28, 2002, 11:57:17 AM »

I use two ICE 419A bandpass filters. Go to http://www.arraysolutions.com/Products/icemain1111111.htm for more information. Jay is certainly willing to help you out with more information. Recently I built a small automatic banddecoder so my FT-1000MP switches the correct filter by itself whenever I change bands (WARC-bands are bypassed automatically). I do have a PDF-file, but only in German. You also might consider to try stubs first and/or additional to the bandpass filters. 73 de Oliver
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KE4ZHN
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Posts: 138




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« Reply #4 on: May 07, 2003, 06:15:11 PM »

If anyone finds one that filters out contesters, by all means I want one!
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